I have a 1992 suburban 350 motor. truck had no power and bogged down when gas pedal applied. i changed the filter and now it wont start by itself. i spray starter fluid and it runs fine for 1/2 hour then dies. spray again and starts right up again. is it fuel pump or maybe fuel relay?

First thing i would do i would check fuel pressure if you have good fuel pressure then the next thing i would unbolt the exhaust from the exhaust manafold and then try to start engine if the engine starts up and runs fine then you have clogged up exhaust converters

terry - Master tech